[R] Plot availability

[john crepezzi]

hadley,
thanks for the example, that put it much better into perspective.  I'm
gonna make some coffee and read through this page and see how deep it
goes.  I might even be able to use this for some other things we're
doing.

Thanks!
--John Crepezzi

hadley wickham wrote:
> I really would encourage you to look at ggplot2 before trying to
> create something of your own.  Your example would convert to the
> following ggplot2 code:
>
> df <- data.frame(x = 0:3, y = 3:0)
>
> plot <- ggplot() + xlim(-3, 3) + ylim(-3, 3) + opts(main = "Hello World")
> plot + geom_line(aes(x=x, y=y), df, colour = "blue")
>
> Hadley
>
> On Fri, Sep 19, 2008 at 1:44 PM, john crepezzi <seejohnrun at gmail.com> wrote:
> > I believe I've found a way to wrap and use dev.cur()[[1]] to have the
> > desired effect.  I'm just leaving my terminal now, but I'll post these
> > results on monday so everyone can see how it turned out.
> >
> > If you have any ideas or qualms with this method, please let me
> > know.
> >
> > Thanks Duncan!
> > --john
> >
> > On Sep 19, 2:00 pm, john crepezzi <seejohn... at gmail.com> wrote:
> >> I'm not so sure the original way I stated my issue was clear enough,
> >> so I'll attempt to elaborate a little bit.
> >>
> >> I'd like to make a function that is passed the name of a plot object,
> >> and a lines/point specification, and graphs them all on the same plot.
> >>
> >> I don't want to redraw the plot each time, and I don't want the code
> >> to have any concept of a "first entry" instantiating the plot with
> >> plot() in place of lines().
> >>
> >> Ideally, I'd like something to the effect of:
> >>
> >> plot <- createPlot(main = "Hello World", sub = "tiny, little world",
> >> xlim = c(-3, 3), ylim = c(-3, 3))
> >>
> >> plot <- addElement(plot, lines(col = 'BLUE', x = c(0, 1, 2, 3), y =
> >> c(3, 2, 1, 0)))
> >>
> >> Hopefully this laid my problem out a little better.
> >>
> >> Thanks in advance for any help you might be able to offer
> >> -John Crepezzi
> >>
> >> On Sep 19, 10:11 am, Duncan Murdoch <murd... at stats.uwo.ca> wrote:
> >>
> >> > On 9/19/2008 9:32 AM, john crepezzi wrote:
> >>
> >> > > Is it possible to see if a plot is already open before I call lines()?
> >>
> >> > I don't think so.  You can see if a graphics device is open by looking
> >> > at dev.cur(), but I don't think there's a test for plot.new().  I'd just
> >> > wrap the call in try() if you're not sure it will work.
> >>
> >> > Duncan Murdoch
> >>
> >> > ______________________________________________
> >> > R-h... at r-project.org mailing listhttps://stat.ethz.ch/mailman/listinfo/r-help
> >> > PLEASE do read the posting guidehttp://www.R-project.org/posting-guide.html
> >> > and provide commented, minimal, self-contained, reproducible code.
> >>
> >> ______________________________________________
> >> R-h... at r-project.org mailing listhttps://stat.ethz.ch/mailman/listinfo/r-help
> >> PLEASE do read the posting guidehttp://www.R-project.org/posting-guide.html
> >> and provide commented, minimal, self-contained, reproducible code.
> >
> > ______________________________________________
> > R-help at r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> >
>
>
>
> --
> http://had.co.nz/
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.